Pin-tumbler mechanism.



C; F. KOHLBBRGER.

PIN TUMBLER MBGHANISM.

APPLIGATION FILED 00T.18, 1911.

Patented May 6, 1913.

:PATENT oEEIoE.

CHARLES F. KOHLBERGER, OF .NEW YORK, N. Y.

PIN-TUMBLER MECHANISM.

i Specication of Letters Patent. Application filed October 18, 1811. Serial No. 655,342.

Patented May 6, 1913.

To all whom t may concern:

.Be it known that I, CHARLEsf'F. Kom.- BERGER, a citizen of the United States, re'- siding in New York city, in' the county of New York andfState of New York, have invented certain new and useful Improvements in Pin-Tumbler Mechanism, of which the following is ay specification. l

My present inventionrelates to a pin tumbler lock mechanism. ,One of the ad;V vantages of my device is that owing to its peculiar construction I increase the number of breaking or registeringpoints of the said pin tumblers, thereby ma ing an increase of the range of permutations or possible'tumbler combinations. Y i

Another advantage is the introduction of an extra barrel which may be called the pin tumbler barrel, which'is so arrangedl as tobe out of sight, normally, and which increases the security of thelock against tampering l A urther advantage 1s that the structure of my invention permits of a mutual inter-.-

locking of all of the coacting parts', the releasing o the proper members in the device causing the release of the self contained sec.

ondary securing mea-ns which permit the proper o eration of the device.

A urt er advantage is that the plural securing members are intersected and held` by the same tumblers, the operation of the same effecting a release of all of the locked members, and while thepprimary member might be released by an improper key, the secondary member would prevent the complete cycle of movement, thereby preventing the operation of anyl mechanism controlled thereby.

Figure 1 is a sectional view taken on line 2-2, Fig. 2. Fig. Fig. 1. Fig. 3, is a sectional view similar to that of Fig. 1, showing a key inserted in the key barrel. Fig. 4 is a rear elevation of my device showing the position of the operating parts upon insertion of the pro er key. ig. 5 is a section taken on the lline 1-1, Fig. 2. Fig. 6 is a sectional view taken on line 4 4, Fig. 4. j

In Fig. 1 my device is sho .n as having an outer cylindrical portion 1 having rotatably mounted therein a key barrel 2, said key barrel having therein a key slot 3. lAttached to the rear end of the key barrel 2 by suitable means is a stop disk 4 which has an opening 5 at its upper end, said opening 2 is a rear elevation of" being tapered as at 6, Fig. 1, thereby form- 1ng a substantially crescent shaped cam face. This disk 4 may be attached to the primary or key barrel 2 b any convenient method, i such as screws 7, and has extending from .its surface a lu *8 by means of which upon the insertion o the proper key andthe rotation of said key barrel, the lug 8 is caused to` transmit motion to any suitable lock mechanism, not shown. Immediately above the key barrel 2 and in close proximity thereto is a secondary or pin tumbler barrel 9, which is slidably supported in a bore 10. In the rear end of this ore 10- is shown a chamber 11 and in the front endV of the pin tum le arrel 9 is a pin slot 13 and into which pin'slot extends a in or dowel 14 which has on itsupper end a threaded portion 15. This pin or dowel member 14 is for the purpose of main* taining the pin tumbler barrel 9 in its normal inoperative position, and when the said member 9 is pushed forward it positively maintains thel said member 9 against rotation when' operating in the bore 10. It willbe noted that the cylindrical portion 1, Fig. 5, shows that the pin 'tumbler bores 15 traverse the two barrels t While the key barrel 2 is intended, as in the well known type of pin tumbler mechanisms, to receivea key and 'upon the proper setting of the tumb ers Vto bev rotated by means of 'said key, it will be noted that the pin Vtumbler barrel 9 backward upon its spring member 11 when the proper key has set all of the spring actuated pin tumblers 16, so that the various breaking points of the said pin tumblers corels. When a key is inserted in the key barrel 2, properly setting the pins, the key barrel is then rotatable. Upon the said rotation of the key barrel the cam disk 4 at# tached at the rear end thereof, rotates therewith and the-crescent shaped beveled face 6 of the said disk. engages the over-hanging chamfered end portion 17 of the pin tumbler barrel 9, and if the key is a proper one, thereby causing all ofthe pin tumblers to register at the said barrel 9 is orced back upon its spring 11, Fi 6, thereby permitting the full rotation o the key barrel and its attached cam disk 4, as shown in Fig. 4, which movement said chamber is located a s r`n12. At the y has an entirely differ-- ent movement and is intended tov be forced oints 1-8, 19, and 20, thel incide with the circumference of both barmay be transmitted to any suitable bolt op- @rating mechanism. The backward movement ot' barrel 9 also shuts oli the lower portions of the tumblers betiveen the key barrel 2 and barrel 9, and at the same time barrel 9 is held in its retracted position as .long as the cam disk 4 is out of normal position. If, however, the key is an improper one, the said key might possibly set the pin tumblers properly for point 2O of the key barrel, thus. permitting the partial rotation of barrel 2, but the pin tumblers would be improperly set for points v18 and 1.() ol the pin tumbler barrel 9. This would permit of rotating the key barrel enough to allow the crescent shaped cam portion G to engage the end 1 7 of the barrel 9, and owing to the fact that the pin tumblers do not register at points 18 and 19 of the said barrel 9, the overhanging portion of the saine would obstruct any further rotation of the disk 1, thereby preventing the keybarrel from being rotated Afurther. It will be further noted that if desired, movementmay be transmitted to any suitable lock mechanism by either the previously mentioned lug 8 Which is aiiixed to the primary or key barrel 2, or by means ofconnection 8', Fig. 3, which is shown connected to the actuated secondary barrel 9. v

Having thus described my invention, I claim 1. In a pin tumbler mechanism of the class described, a pair of pin tumbler secured barrels, said barrels comprised of al,

primary and a secondary barrel, said barrels not normally in engagement With one another, actuating means carried by said primary barrel and operative to engage and retract said secondary barrel upon the setting of the pin tumblers, and to hold the said secondary barrel'in said retracted position until the return of the said primary barrel to its normal inoperative position, and means inoperative connection with said secondary barrel for returning it to its normal inoperative position.

2. In a pin tumbler lock of the class described, a casing,a pair of separately mounted movable barrels in said casing, one of said barrels having a rotary motion, the

other of said barrels having a longitudinal motion, means on the rst said barrel for causing the second said barrel to move longitudinally in one direction, means between said casing and said second barrel for causing opposite longitudinal movement of the second said barrel, and means between said barrels to mutually obstruct one another.

3. In a pin tumbler lock of the class described, a casing, a pair ot' separately mount-- ed movable barrels in said casing, one of said barrels having a rotary motion, the other of said barrels having a longitudinal motion, means on the first said barrel for causing the second said barrel to move longitudinally in one direction, means between said casing and said second barrel for causing opposite longitudinal movement of the second said barrel, means between both said barrels to mutually obstruct one another, and means on said second barrel for maintaining the same in operative position.

4. In a pin tumbler lock, a casing having a chambered portion, a key-operated pin barrel rotatable in the casing, a set of pin tumblers in the casing arranged to coperate with the said barrel, a slide mounted to reciprocate in the casing substantially parallel with the axis of the said barrel, the slide having a set of bores coperating with said pin tumblers to obstruct the slide and to permit its endwise movement upon proper setting of the tumblers by a key in the barrel, means connecting the barrel with the slide for advancing the slide when released bythe tumblers, and means independent of said barrel for returning the slide to normal position when the slide is released from the barrel.

5. In a pin tumbler lock, a casing having a chambered port-ion, a key-operated pin barrel rotatable in the casing, a set of pin tumble-.rs in the casing arranged to cooper-- ate with the said barrel, a slide mounted to reciprocate in the'casing substantially parallel 'with the axis of the said barrel, the slide having a set of bores cooperating with said pin tuinblers to' obstruct the slide and to permit its endwise movementupon proper setting of the tumblers by a key in the barrel, means connecting the barrel with the slide for advancing the slide'when released by the tumblers, and a spring arranged to return the slide to normal position When the slide is released by the barrel.

6. In a pin tumbler lock, the combination of a casing having a chamber, a key actuated barrel rotatable in the casing, pin t-uinblers coperating with the barrel, a slide in the casing provided with bores coperating with the pin tumblers, the barrel member having a. portion Xed thereon arranged to engage directly with the slide to advance the slide when permitted to move by the setting` ci the tumblers.

7. In a pin tumbler lock, the combination of a casing having a chamber, a. key actu ated barrel rotatable in the casing, pin tuin-- blers coperating With the barrel, a slide in the casing provided with bores coperating With the pin tumblers, the barrel member having a portion fixed thereon arranged to engage directly with theslide toadvance the slide when permitted to move by the setting of the tumblers, and means independent ot the barrel for returning the slide to normal position when released from the barrel. v

8. In a pin tumbler lock, the combination of a casing, a key-operated barrel rotatable mounted to reciprocate in the second bore 35 in tbe casing, pin tumblers in the casing cosaid two members and the casing provided operating with the barrel, a slide mounted with registering bores, pin tumblers slidto reciprocate in the casing and provided able in said bores, means on the barrel for 5 with bores coperating witlrthe pin tumdirectly engaging the slide to advance it,

blers` a cam fixed on tbe barrel and engagand a springiorvreturning tbe slide to nor- 40 ing directly with the slide to advance tbe mal position. i slide as tbc barrel swings. 12. In a pin tumbler lock, the combina- 9. In a pin tumbler lock, tlie combination tion of a casing having a cylindrical bore,

le of a casing, a key-operated barrel rotatable a key-operated barrel rotatable in the bore,

in the casing, pin tumblers in the casing cothe casing having a second bore offset from 45 operating with the barrel, a slide mount-ed said bore, a slide movable in---the second to reciprocate in the casing and provided bore, the casing and tbe said tWo members with bores cooperating with the pin tumbeing provided with registering bores, pin

15 blers, a cam fixed on the barrel'and engagf tumblers operating in said bores, a cam fastI ing directly with the slide to advance tli'e on the barrel and directly engaging the slide 50 slide as tbe barrel swings, and a spring ar to advance it. in one direction, and a spring ranged to return the slide to normal posifor returning the slide to normal posit-ion t-ion. When released by the barrel.

2O 10. In a pin tumbler' lock, a casing hav- 13. In a pin-tumbler lock, a stationary ing a cylindrical bore, a key-operated barrel 'member having a cylindrical bore, a lrey- 55 rotatable in said bore, the casing having a operated pin barrel mounted in said bore, second bore offset from said bore, a slide the said member having a second bore ott'set mounted to reciprocate in the 4seco-nd bore, and aside :trom said bore, a pin barrel mount- 25 said two members and the casing provided ed in the second bo-re, said barrels being with registering bores, pin tumblers slidable entered and arranged to be locked by the 60 in said bores, means on the barrel for disame pin-tumblers, one of said barrels be-. rectly en aging the slide to Vadvance it, and ing operated by the key, and the other said means inc ependent of the barrel for return- ,barrel being operated by said key-operated :s0 ing the slide t0 normal position. barrel.

11. In a pin tumbler loclna casing liav- CHARLES F. KOHLBERGER. ing a cylindrical bore, a key-operated bar- Witnesses: rel rotatable in said bore, the casing having JOHN MORRIS, a second bore otsct from said bore, a slide FRED. J. DOLE. 

